Game of skill or the like



Aug. 14, 1962 F. CHOCHOLATY 3,049,351

GAME OF SKILL OR THE LIKE Filed July 3, 1959 3 Sheets-Sheet 1 INVENTORFE 0755K 06/104177 BY ////////f//////// Aug. 14, 1962 F. CHOCHOLATY/GAME OF SKILL OR THE LIKE 3 Sheets-Sheet 2 Filed July 5. 1959 FIG.4

FIG.6

FIG. 7

Aug. 14, 1962 F. CHOCHOLATY GAME OF SKILL OR THE LIKE 5 Sheets-Sheet 3Filed July 3, 1959 INVENTOR se'KZuoa/omrf ,qrmewsy United States PatentifiFice 3,049,351 GAME OF SKILL OR THE LIKE Frantisek Chocholaty,Rytirska 22, Prague, Czechoslovakia Filed July 3, 1959, Ser. No. 825,3934 Claims. (Cl. 27386) My invention relates to a game of skill or thelike which may be used by a single person for amusement or competitivelyby a group of persons.

In my new game I use a set of differently sized and shaped rotationalbodies having a circular base face. I have found that all bodies of suchset, provided that the diameter of said circular base face does notsubstantially exceed the greatest diameter of the body and furtherprovided that in all bodies of the set the linear sum of said diametersand of the distance between the planes containing said diameters issubstantially identical, per form substantially similar, though inmagnitude differ-ing, rotational and pendulating movements when spun ona supporting board about their inclined rotational axis with the plumbline containing the center of gravity passing through said circular baseface. With said provisoes adhered to the said rotational bodies may haveany desired size and shape; for example they may substantially have theshape of a truncated cone or of a goblet or the like, they may be solidor partially hollow, and they may be made of any material having asubstantial specific weight for example from glass, ceramic or plasticmaterial, or metal. When the bodies are spun on a supporting board thesuccessive contact points between the base face and the board will movealong a substantially cycloidal trajectory; if the board is horizontalthe center line of the trajectory will be more or less curved accordingto the skill of the operator; if the board is inclined said center linewill be flattened and depending on the skill of the operator evenstraightened so that it will extend substantially perpendicular to theslope of the inc-lined board.

The said and other objects of my invention will be more fully understoodfrom the following specification when read with the accompanying drawingin which several embodiments are illustrated. In the drawing FIG. 1shows in front view a truncated conical body being one of differentlysized and shaped rotational bodies forming a set in accordance with myinvention,

FIG. 2 shows in front view a substantially gobletshaped body being oneof differently sized and shaped rotational bodies forming a set inaccordance with my invention,

FIG. 3 shows the substantially cycloidal trajectory formed by succeedingcontact points between the supporting board and the circular base faceof the rotational body when the same is spun about its inclinedrotational axis,

FIG. 4 shows in front view another rotational body and the manner how itis manually spun about its rotational axis,

FIG. 5 shows in front view a set of rotational bodies interrelatedaccording to my invention,

FIG. 6 shows in front view a set of rotational bodies supported by aninclined board, and

FIG. 7 shows the trajectories of said bodies on said inclined supportingboard.

The same reference characters indicate the same or equivalent elementsin all figures of the drawing.

The set of rotational bodies according to my invention may be composedof differently sized and shaped conical bodies 11 shown in FIG. 1. Thebodies 11 are spun about their rotational axis 16 as indicated by arrow19. The plumb line 17 passing through the center of gravity 14 of thebody should not pass beyond the base :face 12. Succeeding contact points15 between the supporting board 18 and each of the spun bodies 11 of theset will move along substantially similar cycloidal trajectories 20having a curved center line 21 as shown in FIG. 3.

FIG. 2 shows a rotational body 11 having substantially the shape of agoblet. The upper part of the body 11 may be substantially cylindricalas shown in full lines or it may be bulged as shown in dotted lines, andin either case either solid or hollow. The diameter of the base face 12does not exceed the greatest diameter d of the body. As stated abovewith regard to the embodiment shown in FIG. 1 the plumb line 17 passingthrough the center of gravity of the body 11, when the same is spunabout its inclined rotational axis, should not pass beyond the base face12 of the body and the bodies of a set will move along substantiallysimilar cycloidal trajectories 20 as shown in FIG. 3.

FIG. 4 shows another shape of a rotational body 11 in a set according tomy invention and the figure also indicates how such body is manual-1yspun about its rotational axis 16 in the direction of arrow 19.

FIG. 5 shows six differently sized and shaped rotational bodies 11forming a set according to my invention. The individual bodies 11 of theset are so interrelated that the sum of the diameter d of the base face12, of the greatest diameter d of the body and of the distance d betweenthe planes in which said diameters d and :1 are located is substantiallyidentical in all bodies 11 forming the set.

FIG. 6 shows a set of rotational bodies 11 supported by an inclined baseplate 22. When the bodies 11 are spun starting at one of the inclinededges of the base plate 22 the center line 21 of the cycloidaltrajectory 20 (see FIG. 3) will be flattened or even straightened asshown in FIG. 7 depending on the skill of the operator.

While specific embodiments of my invention have been shown and describedin detail to illustrate the application of the principles of myinvention, it will be well understood that the same may be otherwiseembodied without departing from such principles.

What 1 claim as my invention:

1. A game of skill comprising a set of rotational bodies having acircular base face; in each of said bodies the diameter of said baseface not substantially exceeding the greatest diameter of the body; andin all bodies the sum of said diameters and of the distance between theplanes containing said diameters being substantially identical; saidrotational bodies being differently sized and shaped to performgenerally similar rotational and pendulating movements differing inmagnitude when spun about their inclined rotational axis with the plumbline containing the center of gravity of the respective body passingthrough said circular base face.

2. A game of skill comprising a set of rotational bodies; each of saidbodies composed of a circular base disk, an upper body and anintermediate connecting stem; in each of said rotational bodies thediameter of said base disk not substantially exceeding the greatestdiameter of said upper body, and in all bodies the sum of said diametersand of the distance between the planes containing said diameters beingsubstantially identical; said rotational bodies being differently sizedand shaped to perform generally similar rotational and pendulatingmovements differing in magnitude when spun about their inclinedrotational axis with the plumb line containing the center of gravity ofthe respective body passing through said base disk.

3. A game of skill according to claim 1 and comprising a tiltablymounted desk board supporting said rotational bodies when being spun andcausing the rotating and pendulating bodies to move in a directionsubstantially perpendicular to the slope of the board.

4. A game of skill according to claim 2 and compris- Patented Aug. 14,1962' 3 ing a tiltably mounted desk board supporting said rotationalbodies when being spun and causing the rotating and pendulating bodiesto move in a direction substantially perpendicular to the slope of theboard.

References Cited in the file of this patent UNITED STATES PATENTS D.75,271 D. 122,924 D. 164,618 D. 166,179 819,132 2,887,320

4 Loomis May 22, 1928 Fuerst Oct. 8, 1940 Yuchtmann Sept. 18, 1951 Dowd-2 Mar. 18, 1952 Evens May 1, 1906 Gravelle et a1 May 19, 1959 FOREIGNPATENTS Great Britain May 22, 1919

